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SYSTEM FOR HEAT DISSIPATION FROM HAND-HELD INSTRUMENTS USING SELECTIVELY INSULATED METAL FINS

Publishing Venue

The IP.com Prior Art Database

Abstract

This disclosure describes a system for dissipating heat from the interior of a hand-held instrument to the external environment using a heat sink including a metal shield and selectively insulated metal fins.

Country

Undisclosed

Language

English (United States)

This text was extracted from a Microsoft Word document.

At least one non-text object (such as an image or picture) has been suppressed.

This is the abbreviated version, containing approximately
40% of the total text.

system For Heat dissipation from hand-held
instruments using selectively insulated Metal fins

This disclosure describes a system for dissipating heat
from the interior of a hand-held instrument to the external environment using a
heat sink including a metal shield and selectively insulated metal fins.

The system enables heat dissipation from the interior of a hand-held
instrument to the external environment using a heat sink. The heat sink
includes a metal shield that extends outside the hand-held instrument and
includes metal fins selectively coated with a low thermal conductivity material.
In an example, the hand-held instrument includes radio frequency (RF) circuits
that are enclosed between a pair of metal shields. Typically, one or more of the
metal shields is placed near the back of the hand-held instrument to dissipate
heat. In the disclosed system, the metal shield placed near the back of the
hand-held instrument acts as the heat sink. The heat sink extends outside the
hand-held instrument and includes metal fins that protrude outwards from the
casing of the hand-held instrument. An outer periphery of the heat sink is
provided with environmental sealing.

The metal fins are made of a high thermal conductivity metal
and hence, rapidly transfer the heat produced within the hand-held instrument
to the external environment. The metal fins effectively dissipate the heat
generated inside the hand-held instrument and hence, maintain the temperature
of the hand-held instrument within safe and comfortable limits. The metal fins
are selectively coated with a low-thermal conductivity material in such portions
that may come in contact with a user’s skin. The coating prevents the user’s
skin from getting burnt or damaged during normal usage of the hand-held
instrument. The shape of the metal fins is customizable based on the appearance
and functionality of the hand-held instrument.

Thus, the high thermal conductivity metal fins, selectively
coated with the low thermal conductivity material, facilitate dissipation of the
heat produced within the hand-held instrument in an effective and safe manner.
Hence, the temperature of the hand-held instrument is maintained within safe
and comfortable limits.

Fig. 1A is a perspective view of a hand-held instrument 100
in which various examples of the system may be practiced. The perspective view shows
a cutting line 1-1’, which is parallel to the z axis. A cross-sectional view of
hand-held instrument 100 along cutting line 1-1’ has been explained in detail
in conjunction with Fig. 1B. Examples of hand-held instrument 100 include, but
are not limited to, RF measurement and testing devices such as Spectrum Network
Analyzers (SNAs), Vector Network Analyzers (VNAs) and other types of systems
and instruments.